I'm a healthy man, early 40's, currently on no medication. Quiet often my stool is light colored, from orange-brown to yellow, but not pale, and it's spongy solid, low density and breaks up up when it mixes with water, but no mucous or blood. When that happens, I have frequent bowel movement, between 3 to 5 times in the morning. My appetite is healthy, no fever, chills, nausea or vomiting. My gastro-specialist had me do all test, from celiac (blood & stool), Hepatitis, gall stones, colonoscopy, small bowel and upper GI series, malabsorption, and other tests, but, with the exception of some slight gastritis, the were all negative. He thinks that the light stool color is due to short transit time in the small intestins, due to nervousnes. I mentioned to him that those symptoms started few years ago after a 4 weeks course of Cypro, taken for chronic non-bacterial protatitis, so he gave me Diflucan for 5 days, because a stool test showed some Candida. My stool went back to normal when I was take in the Diflucan. It was darker and more solid and dense, but it changed again after I finished the Diflucan. A second course of Diflucan made my stool slighly darker. Periodically, I experience plain fatigue, with no fever or chills, and I hear digestion noises (water trickling) in my stomach and intestins after a meal with some gas, but not excessive. The fatigue lasts for few days. Sometimes I experiense some light pulsating muscle aches. I saw several specialists, rheumatologist, infectious deseases specialist, neurologist, but they cannot find anything wrong with me. I noticed that the more fiber I eat, especially vegetables and oat cereals, the spongier my stool gets, and my bowel frequency increases. I tried changing breakfast ceral from oat to corn flakes, and it made my stole color slighly darker (light brown). I thought of being allergic to some foods, and a visit to an Allergist showed no allergies, after he did a skin test.
What's causing the stool cloror to change, and is my chronic fatigue related to it?
Thank you